<!DOCTYPE html>

<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>通配选择器</title>
        <style type="text/css" >
            /*
            .outer { border: 1px solid blue ; }
            .inner { border:  1px solid red ; height: 100px ; margin: 15px ;  }
             */

            * {
                border: 1px solid blue ;
                margin: 15px ;
            }

            .inner { height: 100px ; }
        </style>
    </head>
    <body>

        <div class="outer">
            <div class="inner">
                <input type="text" >
            </div>
        </div>

        <div class="outer">
            <div class="inner">
                普通文本
            </div>
        </div>


    </body>
</html>